I love seeing what comes out of live rock. After 3 years I'll still notice something new once in a while growing on it. You can get some nasty hitch hikers but I've had good luck. What have you been finding?
man i got one rock, that i got the bad pleasure of getting bristle worms on. I havent seen them but once thats the good thing, but the good thing is that i got bristle starfish with that same rock